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I was using prcomp() on R for the first time and I was wondering on the description about the scale argument, this part in particular:

The default is FALSE for consistency with S, but in general scaling is advisable.

I couldn't find in the rest of documentation any reference to S. What does it stand for?

D.K.
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  • It's probably referring to https://en.wikipedia.org/wiki/S_(programming_language) which is R "father" – RLave Feb 08 '19 at 10:55
  • Thanks, didn't see that coming; do you know the logic on why is it set that way or some other references that I can check? – D.K. Feb 08 '19 at 11:03
  • The default is FALSE for consistency, as the doc says. Probably S had the same default value. That's not something to worry about, you should scale usually anyway. – RLave Feb 08 '19 at 11:07
  • That's for sure, I was just curious about it. – D.K. Feb 08 '19 at 11:13

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